Water pump prime loss during winterization is commonly caused by faulty check valves, air leaks in suction lines, or worn pump components. This comprehensive guide covers diagnosis, repair procedures, and preventive maintenance for RV water systems.
While there's no direct plug-and-play replacement for the Atwood GC10A-4E with a gas-only tankless unit, you can upgrade to dual-fuel tankless heaters like the Girard GSWH-2 or Truma AquaGo. These maintain electric capability while providing instant hot water and better efficiency.
Use a 20lb or 100lb portable propane tank for winter RV storage heating. Connect at quick-connect port or regulator. Set thermostat to 40F to prevent freezing with minimal propane use.